Improvement in removable calks for horseshoes



To allwhom it may concern.-

'iluiml gisten @geteld milite,

i Letters Patent No.` 103,827, dated .Time 7, 1870.

nvnuzovnlvrznv'r IN REMovABLn cALks ron :ionen-:enorm4 'rne schedule :armed 0 n1 time Lessen Panne and making parier manine Be it known that I, JOHN D. BARNUM, of Amenia Union, Dutchess county, State of New York, have in` vented an Improvement in Removable Calks for Horseshoesg and I do hereby declare that thefollowing is a full, clear, and exaet'deseription thereof,

reference being had to the accompanying drawing which forms part of this speciication, in which- Figure 1 represents the horseshoe before the insertion of the heel and toe-calks, showing.,r the grooves.

Figure2 is a separate view of the toe-calli'.

Figure 3 is a' separate view of the heel-calli in cross-section, showing the tenori.

.Figure 4 shows a heel-call:v when fastened in.

To enable others skilled in the artto make and use my invention, I will proceed to descn'be the same.

I have the horseshoe made in any usual manner, without calks. I form transverse grooves 'in the shoe, at the heel and toe, as shown: at a b c, in Iig. 1.

I then provide calks d e, adapted furthe heel and toe respectively, each having tenons d'e thereon, of

a dovetail or other equivalent shape, and also slightly tapering or wedge-like, the grooves in the shoe corresponding thereto, as-shown in figs. 1 and 2, where the dotted lines indicate the'loeat-on of said calks. l

The small end ez ofthe tenons are made to project a. little beyond the calk proper, to be used for securing vthe calk in place on the' shoe.

At thev narrow end 'of the grooves al b c small re- I cesses 4 are formed inthe side 4of the shoe, about at right angles to the-groove, and corresponding in size to the small end of the wedge-shape tenon.

The ealk is attached to the shoe byventering the small end of the tenon in the groove and then driving it tightly in. The projecting end e2 of the tenon is then struck np Or hammered into the recess 4, at the side of the shoe, forming a clinch with the small end of the wedge, as'illustrated-in iig. 4, which shows a heel-calk so fastened and secured.

When the ealk has been worn and requires relnoval, it is only requisite to straighten out the clinched port-ion of the end of the tenon, and drive it'ont of the groove, when another oalk may be inserted in the same manner as before, the'shoe being uninjured by any number of changes.

I claim a removablecalk, having a'tenon projection, e?, at the end of.. the ealk, in combination with a shoe provided with a recess,- 4, in the side thereof, in addiy tion to the grooves tb c, such recess receiving-the projection e2, which is driven into it to secure the calk,

substantially as described. 1

, J.D. BARNUM.

Witnesses J. K. BAMLET'T, D.- E. LAMBERT., 

